Valve mechanism.



J. WILSON.

VALVE MEGHANISM.

LPPLIUTION FILED JUNE 29. 1911- 1,084,992. Patented Jan. 20, 1914.

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J. WILSON. VALVE MEGHANISM.

APPLICATION FILED JUNE 29,1911. 1,084,992 Patented Jan. 20, 1914.

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VALVE MEGHANISM.

APPL'IOATION FILED JUNE 29, 1911.

Patented Jan. 20, 1914.

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VALVE IVH'GHABHSA APPLICATION FILED JUNE 29.19.11.

J. WILSON.

VALVE MEGHANISM.

APPLIGATION FILED JUNE ze, 1911.

1,084,992. Patented Jan. 20, 1914.

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L TA1 UNITED STATES PATENT OFEIGE:

JAMES WILSON, or BRISBANE, QUEENSLAND, AUsinnj,

vALvE MECHANISM.

Application filed June 29, 1911.

, Mechanism, of which the following' is a V requiring the valves propermechanism.

specification.

The present invention relates to valve mechanismor engines, andconsistsin the combinations andl arrangements of elements .hereinafter disclosedand particularly set forth in the accompanying claims.

The invention has for its purpose to provide a valve mechanism whichwill insure quiet operation; provide clear openings for the valvepassageways; which will obviate 'crossing said passages; and one whereinthe construct-ion of parts will be simple and may be easily assembledand disassembled.

The invention isy shown by way of illustration in the accompanyingdrawings,4

wherein:

Figure 1 is `a centra-l sectional View of an engine cylinder equippedwith the valve mechanism, showing parts thereof removed. and parts inelevation, and with 'the fuel inlet fully open. Fig. 2 is a similar viewshowing thevfuel inlet closed and the exhaust passageopen. Fig. 3 is atop pian view of the valve actuatin crank shaft. Fig. 4 is a viewsimilar to Flgs. 1 and 2 and showing the position of parts at about theend of the exhaust and the beginning of the suction stroke of theVpiston. Fig'. 5 is a like view showin the relation of parts with thepiston on the rst half of its suction stroke. Fig. 6 shows the parts at,the end of the suction stroke and the starting of the compression strokeof the piston. Fig. 7 is a modified construction and shows the parts atthe end of the vcompression and starting of the ignition. Fig. 8 showsthe parts on the ,iinish of the explosion and farting of the exhaust.Fig. 9 shows the exhaust fully open, at the end of the exhaust stroke ofthe pistonu Fig. 10 is a view similarto Figs. 1 and 2 illustrating amodified form of valve actuating Fig. 11 is a topplan view ofSpecification of Letters Patent.

Paten-.dyiaj-ao1o Serial No. 636,031.

the cam shaft employedffir'fFig 1101;..Eigizl2 shows the position ofrvparfts5=with tlrumddiiied form of mechanism-,ewhenhlexhahstxis fullyopen. Fig. 13 isfai top r planaaaien', similar to Fig. `11, with5fthe.-cani"siaagitftree.25.5 moved. Fig. 14 is afcentlisetiohalvewtaken at right angles "t Ffiggluifand til. Fig. 15 is a' partelevatioradtransverse sectional View of the,vaivefaciua-tngshaft,showing the coupling connection??therfceco Fig. 16 illustratesther-driving geatfowthe valve actuating shaft-'.-fliFigiltis'faocfeiitral sectional view of the cors'tflctidisipimfin Figs. 1and 2 and `takiifativrrght'fmgles thereto, and Fig. 18is'fapaitiaitlimsecso tional view of the cylinde 'h'eadwmstmuef tion. J -'nfii'Referring to the construotirtfm further detail, C designatesthfarerginef iider havinga head Gr and a-coveriOfltherforgwo and a hoodor casinglV5=sjmountedfon, said cover and incloses the valyemeolialtisiitv foibe described. A Water jaoket iseformed'in the cylinderand cylinderfh' 'f-ibsf'siitiwn. The head GrX is formedi'vvithf-a'fcindi'ialex--w tension C2 providingthe Va e'worlcing chamber, and apluralityfo -pontsiare formed in the head to providefiiilet'passages forthe gas or other fuel from thejsurriounding chamber G of the cap i6@`'fliiedread?azz-la() tension C2 provides'an ali'lnula spaceif-'E3 withAthe edge of the yi deC-Yandioiims an exhaust outlet E (se Frigslfflaitdmme The valve mechanisrnfohsisegfo-aiseeve E2 mounted tooperatefvitiiinzthehedwex-S tension C2, and adapted 5to'engagegiwithfthe seat X on the cylinder C-at theezhau's passageway E,and contro1"f'sa gewfay. The sleeve-E2 is formed-Wr afplufiityof portsGr2 adapted to're'giste' withtheflxletfw passages Gr formed inlth'e"cylndeihea"d *-Gx, as illustrated in Figs;r 1,4 2`, sgffihe sleeveis further providcdwfith fait' anhudlar shoulder EX which isengaged-l-andliftgdby a second sleeve E mounte" to; pratwitliin thesleeve E2 as shown". he second Steeve E is constructed with a partfEffthatrooperates with the sleeve iE? to ontrotifthe exhaust passagewayE3', asfs'hown in gigs; 4 and 5. plurality pdrtsii4 -ian'fi at 100chamber for a piston S which coperates with said third sleeve, and thesecond sleeve extension, to open and close thepassage therebetween,around the valve seat X as disclosed in Figs. 4 and 5. A shoulder S" isprovided on-the third sleeve S for engaging With the upper portion ofthe piston S to'raise said third sleeve from its seat` X at the proper.periods in the operation of the engine, as Will be hereinafterexplained.

The means for operating the valve sleeves and piston comprises a shaft Vadapted to be driven fromthe main engine shaft Z by -bevel Wheels M andmiter Wheels B, or in anyv other well known manner (see Fig. 16) Shaft Vis made up of two sections connected by a coupling comprising a pair ofdisks V secured together. by a pin V2 (see Fig. 3). The cranked portionsE7 of the shaft V are connected to operate the second sleeve E by a pairof rods E5engaging with pins `PlA carriedv by said sleeve (see Fig. 17).A piston rod S2 connects the crank portions S6 with the piston S by agudgeon pin P. 'The `crank shaft connecting rods S2 and E5 positivelyoperate the second sleeve and the piston from the shaft V, as aboifestated, and said second sleeve and piston in turn operate the first andthird sleeves to unseat said y'sleeves by engaging with their respective`and engaging With said first sleeve as illustrated. in Fig. 5. And inlike manner the third sleeve S is adapted to be moved down- Wardly, orseated, through the medium of a plurality of springs S3 containedwithinregistering recesses Ss formed in the second and thirdsleeves, as shownin Figs. t and 5.

In the modified construction \shown in Figs. 7 10, 11, 12 and 14, thefirst sleeve is operated by a pair ofcams E6 mounted on the crank shaftV, and engaging with rollers R mounted in suitable brackets R3 carriedbythe first sleeve. When using this construction it is proposed toemploy springs the cylinder head closure C and fit within recesses Ssformed'in the sleeve. The inner or third sleeve S' is actuated by camsS10 mounted lon the shaft V -and engaging with rollers R mounted on rodsR2 carried by said sleeve. A seat X is provided in the cylinder head forthe exhaust sleeve E2, and a seat X provided on the exhaust sleeve E forthe suction sleeve S. The valve-actuating shaft V is driven from themainengine shaft Z by bevel wheels M and miter wheels B, or in any otherwell known manner.

'.[n Fig. 1, F denotes the position of the top of the engine piston whenthe valve mechanism is in the position shown in Figs. 1, 2, 5, 9 and 12;F dono-tes the position of the top of the engine piston when the valvemechanism is in the position shown in Figs. 4 and T: and F2 indicatestheposition of the top of the engine piston'when the valve mechanism isin the position shown in Figs. G and S.

The operation of my invention is as fo-llows: When the engine piston isin itsouter, or upper, position F, just atthe beginning of its suctionstroke, the valve mechanism will be in the position shownin Fig. 4;;the' inlet ports being closed and the exhaust port E3 almost closed bythe exhaust sleeve E2. )Vlien the engine piston has traveled through thefirst half of its suction stroke, the valveactuating cranks F] and SGwill have been rotated through 450, and the parts will be shifted to theposition shown in Fig. 5; the exhaust piston E bein shifted downwardlyby the cranks E7 su ciently to carry the ports G3 past the lower end ofthe suction sleeve S8, and to permit the springs S4 to close the exhaustport E3 by the exhaust sleei'e E2. mechanism, the gas chamber G is fullyopenl to the engine. cylinder C through the ports G and G3 and past thelower end of the suction piston S (see Fig. 5). During the last half ofthe suction stroke of the engine piston, the valve-actuating cranks E"and S will be further rotated through 45 to shift the valve mechanismfrom the position shown in Fig. 5 to the position shown in Fig. 6, theexhaust sleeve E being shiftedv downward by the cranks E7, and thesuction piston S simultaneously shifted downward to a greater extent bythe crank t for permitting the springs S3 to seat the suction ,sleeve Sat X to close the ports G3 leading to the gas chamber G. Inthis'-position, both the gas chamber G and exhaust chamber E are closedto the engine cylinder C. The enthen ignited, and the engine pistonbegins its power stroke; the gas chamber G and exhaust chamber-E beingclosed to the engine cylinder' C until near the completion of said lnthis position, of the valve power stroke,

when the valve mechanism is saidv passages comprising a slotted sleeveshifted. to the position shown in Fig. 8. In mounted in the cylinder toengage with said this position of the parts, the exhaust sleeve E hasbeen shifted upwardly by the cranks ET to raise the exhaust sleeve E2and partially open the exhaust port E3, and the suction piston S hasbeen simultaneously shifted upwardly within said exhaustsleeve E. T heexhaust sleeve then begins its exhaust stroke, and during the earlyportion of said stroke the exhaust sleeve E is further shifted upward tofully open the exhaust port "3; the position of the valve mechanism atthe compl-tion of the first half of the exhaust bei ig shown in Fig. 9.The exhaust port E3 i *s maintained fully open until near the com;iet-ion of the exhaust stroke, when the vali mechanism is shifted to theposition ind yated in Fig. 4, and the above steps are ien repeatedduring the operation of the eng 1e.

Figs. ic, 11, 12, 1a and 14 illustrate the above descrivied valvemechanism with cams E and S10 'bstituted ffor the springs S* and S3, andrcrther description thereof is unnecessary.

It is obvious that those skilled in the art may vary the details ofconstruction and arrangement of parts without departing from the spiritof my invention, and therefore I do not wish to be limited to suchfeatures except as may be required by the claims.

I claim:

1. The combination of an engine cylinder having an inlet and an exhaustpassage, and a valve seat; a valve mechanism controlling said passagescomprising a slotted, sleeve mounted in the cylinder to engage with saidseat, and adapted to open and close said passages, sleeves and a pistonmounted to operate within said first named sleeve; said last namedsleeves and the piston constructed to cooperate with the first namedsleeve to provide communication betweenthe inlet and exhaust'passagesand the cylinder chamber; and to close said passages.; and means foroperating said sleeves and the piston, substantially as described.

Q. The combination of an engine cylinder having an inlet and an exhaustpassage; a valve mechanism controlling said passages comprising a sleevemounted to operate in the cylinder, a second sleeve operable within thefirst named sleeve, a third sleeve .operable within said second sleeve,a piston operable within the third sleeve, and means for operating saidsleeves and piston, said sleeves and piston constructed 'to providecommunication between the inlet and exhaust passages and the cylinderchamber,

and to close said passages, substantially as described.

3. The combina-tion of an engine cylinder having an inlet and an exhaustpassage, and a valve seat; a valve mechanism controlling seat, andadapted to open and close said passages, able within the first namedsleeve and provided with a seat, a third sleeve operable within thesecond sleeve and adapted to engage with' its seat, and open and vclosethe passage through the slots in said second sleeve, a piston operablewithin said second and third named sleeves and adapted to open and closethe passa es therebetween to the engine cylinder cham r; and means foroperating said sleeves and the piston, substantially as described.

4. The combination of an engine cylinder having a head provided with aninletand an exhaust passage, and having a seat; a valve mechanismcontrolling said passages comprising a sleeve having a shoulder operablewithin the cylinder head to open and close said passages, resilientmeans for seating the sleeve on said seat, a second sleeve operablewithin the first named sleeve, said second sleeve provided with a seat,a third sleeve having a shoulder and operable within the second sleeve,resilient means for seating the third sleeve on the seat of the secondsleeve, a piston operable within the third sleeve, -and means foroperating said second named sleeve and the piston, the 'second sleeveadapted to engage the shoulder of the first sleeve to raise the latter,the piston adapted to engage the shoulder of the third sleeve to raisethe latter; and said sleeves and the piston constructed to providecornmunication between the inlet and exhaust passages and the cylinder,and to close said passages, substantially as described.

5. The combination of an engine cylinder having a head provided withannular inlet and exhaust passages, and havin a valve seat; a valvemechanism contro ing said passages comprising al shoulder sleeve havingslots disposed adjacent the inlet passage,y

and adapted to engage said seat adjacent the exhaust passage; a secondsleeve operable within the first named sleeve; said second sleeve havingslots disposed adjacent the slots of the first sleeve, and apart foropening and closing the vinlet passage between the first sleeve and thevalve seat; said second sleeve having a valve seat; a third sleeveoperable within the second sleeve and provided with a shoulder, saidthird sleeve adapted to engage with the valve seat of the second sleevefor opening and closing the inlet passage through the slots thereof; apiston operable within the third sleeve and adapted to open and closethe inlet passage between the second and third sleeves; a. crank. shaftadapted to be driven from the engine; driving connections -between thesecond sleeve and piston and the crank shaft; resilient means forseating the first sleeve;

a second and slotted sleeve opery mid resilient means for seating thethird In testimony whereof l have signed my sleeve on the Second sleeve;said second 11a-me to this specification in the presence of sleeve`gdapted to engage the shoulder of the two subscribing Witnesses.

first sleeve for unseating the latter, and said JAMES WILSON. pistonadapted to engage the shoulder of the Yitnessesz third sleeve forunseating the latter, sub- E. GALLEN ABELL.

stantially as described. OLIVE K. ABELL.

